CVE & CISA-KEV Catalog

CVE-2018-21199

MEDIUM
6.8
CVSS v3
NVD

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D7800 before 1.0.1.30, R6100 before 1.0.1.22, R7500 before 1.0.0.122, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.2.52, and WNDR4300 before 1.0.2.98.

CWE-787Out-of-bounds Write

How to fix

Remediation Available
d7800 firmwareNVD
Affected:< 1.0.1.30Fixed in:1.0.1.30CVE-2018-21199derived from NVD
r6100 firmwareNVD
Affected:< 1.0.1.22Fixed in:1.0.1.22CVE-2018-21199derived from NVD
r7500 firmwareNVD
Affected:< 1.0.0.122Fixed in:1.0.0.122CVE-2018-21199derived from NVD
r7800 firmwareNVD
Affected:< 1.0.2.40Fixed in:1.0.2.40CVE-2018-21199derived from NVD
r9000 firmwareNVD
Affected:< 1.0.2.52Fixed in:1.0.2.52CVE-2018-21199derived from NVD
wndr4300 firmwareNVD
Affected:< 1.0.2.98Fixed in:1.0.2.98CVE-2018-21199derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.57%probability of exploitation in 30 days
43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2025-22457Critical9.0100%KEV + RansomFix
CVE-2025-0282Critical9.0100%KEV + Ransom-
CVE-2015-3113Critical9.8100%KEVFix
CVE-2021-20038Critical9.8100%KEV + Ransom-
CVE-2023-4863High8.8100%KEVFix
CVE-2020-16040Medium6.5100%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.